Home › Calculators › Electromagnetism › Electric Field Calculator

Electric Field Calculator

Find the electric field strength around a point charge, or the force it exerts on a small test charge placed nearby in the field.

E = k × Q ÷ r²

The field around a point charge weakens with the square of distance, and a test charge feels a force equal to q times E.

Source charge (C)

Distance (m)

Test charge (C)

Electric field

— N/C

The calculation runs entirely in your browser — no data leaves your device. Change any number and the answer updates instantly.